<template>
  <div class="type-nav">
    <div class="container">
      <div class="nav-left" @mouseleave="handleMouseLeave">
        <h2 class="all" @mouseenter="isShowNav = true">全部商品分类</h2>
        <transition name="sort">
          <!-- 过渡动画 -->
          <div class="sort" v-show="isShowNav">
            <div class="all-sort-list2" @click="btnSearch">
              <div
                class="item"
                v-for="c1 in categoryList.slice(0, -2)"
                :key="c1.categoryId"
              >
                <h3>
                  <a
                    class="cllcursor"
                    data-level="1"
                    :data-id="c1.categoryId"
                    :data-name="c1.categoryName"
                    >{{ c1.categoryName }}</a
                  >
                </h3>
                <div class="item-list clearfix">
                  <div class="subitem">
                    <dl
                      class="fore"
                      v-for="c2 in c1.categoryChild"
                      :key="c2.categoryId"
                    >
                      <dt>
                        <a
                          class="cllcursor"
                          data-level="2"
                          :data-id="c2.categoryId"
                          :data-name="c2.categoryName"
                          >{{ c2.categoryName }}</a
                        >
                      </dt>
                      <dd>
                        <em v-for="c3 in c2.categoryChild" :key="c3.categoryId">
                          <a
                            class="cllcursor"
                            data-level="3"
                            :data-id="c3.categoryId"
                            :data-name="c3.categoryName"
                            >{{ c3.categoryName }}</a
                          >
                        </em>
                      </dd>
                    </dl>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </transition>
      </div>
      <nav class="nav">
        <a href="###">服装城</a>
        <a href="###">美妆馆</a>
        <a href="###">尚品汇超市</a>
        <a href="###">全球购</a>
        <a href="###">闪购</a>
        <a href="###">团购</a>
        <a href="###">有趣</a>
        <a href="###">秒杀</a>
      </nav>
    </div>
  </div>
</template>

<script>
// 第一种方式
// import ajax from '../../../api/ajax'
// import ajax from '@/api/ajax.js'//@会以src为目标来寻找

// 第二种方式
// import {reqCategoryListData} from '@/api'  //结构赋值api
import { mapState } from "vuex";

export default {
  name: "TypeNav",
  data() {
    return {
      isShowNav: false,
    };
  },

  computed: {
    ...mapState("home", ["categoryList"]),
  },
  methods: {
    //处理鼠标离开的函数，
    handleMouseLeave() {
      if (!this.$route.meta.isShowNav) {
        // 筛选除了home的页面
        this.isShowNav = false;
      }
    },
    btnSearch(e) {
      // console.log(e,e.target.dataset);能够获取到编号，dataset里面有所有自定义属性的值，是一个对象的形式
      // const {level,id,name} =e.target.dataset
      // const obj={
      //   categoryName:name,
      //   ['category'+level+'id']:id
      // }

      // if(!level) return
      // this.$router.push({
      //   name:"search",
      //   query:obj
      // })
      // 简写方式
      let { level, id, name } = e.target.dataset;
      if (!level) return; //判断是否点击标题
      const { keyword } = this.$route.query; //把搜索内容添加上去
      this.$router.push({
        name: "search",
        query: {
          keyword,
          categoryName: name,
          ["category" + level + "id"]: id,
        },
      });

      // 此步骤主要是为了获取点击尚品菜单后获取路由的信息，
    },
  },
  mounted() {
    //页面标签渲染后发送ajax请求获取数据
    // ajax.get('/api/product/getBaseCategoryList').then(result=>{
    //   console.log('typeNav启动成功了',result);
    // },error=>{
    //   console.log('typenav错误了',error.message);
    // })

    // 第二种方式
    // reqCategoryListData().then(
    //   (res)=>{
    //     console.log("typeNav数据启动成功", res);
    //   },
    //   (err)=>{
    //     console.log('typeNav数据启动失败',err);
    //   },
    // )

    // this.$store.dispatch("home/getCategoryListData");
    if (this.$route.meta.isShowNav) {
      this.isShowNav = true;
    }
  },
};
</script>

<style lang="less" scoped>
.cllcursor {
  cursor: pointer;
}
.type-nav {
  border-bottom: 2px solid #e1251b;

  .container {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    position: relative;

    .all {
      width: 210px;
      height: 45px;
      background-color: #e1251b;
      line-height: 45px;
      text-align: center;
      color: #fff;
      font-size: 14px;
      font-weight: bold;
    }

    .nav {
      a {
        height: 45px;
        margin: 0 22px;
        line-height: 45px;
        font-size: 16px;
        color: #333;
      }
    }

    .sort {
      position: absolute;
      left: 0;
      top: 45px;
      width: 210px;
      height: 461px;
      position: absolute;
      background: #fafafa;
      z-index: 999;

      .all-sort-list2 {
        .item {
          h3 {
            line-height: 30px;
            font-size: 14px;
            font-weight: 400;
            overflow: hidden;
            padding: 0 20px;
            margin: 0;

            a {
              color: #333;
            }
          }

          .item-list {
            display: none;
            position: absolute;
            width: 734px;
            min-height: 460px;
            background: #f7f7f7;
            left: 210px;
            border: 1px solid #ddd;
            top: 0;
            z-index: 9999 !important;

            .subitem {
              float: left;
              width: 650px;
              padding: 0 4px 0 8px;

              dl {
                border-top: 1px solid #eee;
                padding: 6px 0;
                overflow: hidden;
                zoom: 1;

                &.fore {
                  border-top: 0;
                }

                dt {
                  float: left;
                  width: 54px;
                  line-height: 22px;
                  text-align: right;
                  padding: 3px 6px 0 0;
                  font-weight: 700;
                }

                dd {
                  float: left;
                  width: 415px;
                  padding: 3px 0 0;
                  overflow: hidden;

                  em {
                    float: left;
                    height: 14px;
                    line-height: 14px;
                    padding: 0 8px;
                    margin-top: 5px;
                    border-left: 1px solid #ccc;
                  }
                }
              }
            }
          }

          &:hover {
            .item-list {
              display: block;
              text-decoration: none;
            }
          }
        }
      }
    }
    //过渡动画开始状态
    .sort-enter {
      height: 0;
    }
    .sort-enter-to {
      height: 461px;
    }
    .sort-enter-active {
      transition: all 0.5s linear;
    }
  }
}
</style>